Genetic Polymorphism Of Streptococcus Mutans Strains Associated With Incomplete Caries Removal

Aim: Despite the antibacterial properties of dental materials, the survival of residual bacteria under restorations has been demonstrated after incomplete caries removal. The aim of this study was to evaluate the genetic polymorphism of Streptococcus mutans strains isolated from deep dentinal lesions before and three months after incomplete caries removal. Methods: Samples of carious dentin were collected from 33 primary and/or permanent molars before and after indirect pulp treatment and processed for microbiological isolation of mutans streptococci (MS). After three months of the dental treatment, positive cultures for MS were detected in only ten of these teeth. DNA of MS isolates were obtained and subjected to polymerase chain reaction (PCR) for identification of Smutans. The arbitrary primed-PCR method (primer OPA-13) was used to detect the genetic polymorphism of S. mutans strains. Results: Identical or highly related S. mutans genotypes were observed in each tooth, regardless of the collect. Considering each tooth separately, a maximum of nine genotypic patterns were found in each tooth from all the collects. In addition, at least one genotypic pattern was repeated in the three collects. Genetic diversity was observed among the S. mutans isolates, obtained from different teeth after three months of the dental treatment. Conclusions: The persistence of identical genotypic patterns and the genetic similarity among the isolates, from the same tooth in distinct collects, showed the resistance of some S. mutans strains after incomplete caries removal treatment.812-

La geomorfología en los estudios del medio físico y planificación territorial : propuesta metodológica y aplicación a un sector del Sistema Central

El trabajo de investigación se apoya en un postulado básico: la planificación territorial con bases ecológicas, o planificación integrada, es la herramienta mas adecuada para abordar los denominados "problemas ambientales". Entre las metodologías que abordan esa temática, los procedimientos fisiograficos se muestran adecuados para definir "usos vocacionales" en tanto sintetizan la historia natural y social del territorio; por su carácter de ciencia puente entre la geología y la geografía, la geomorfología se presenta como un campo de conocimientos ideal para abordar este tipo de estudios a través de las "clasificaciones del relieve". Esas clasificaciones deben tener un carácter científico y no exclusivamente configuracional, y adecuarse a los objetivos que intenta resolver: en este caso, problemas derivados del uso del territorio. En base a esas tesis y a partir de los conocimientos derivados de las ciencias de la tierra, se propone como jerarquía básica los niveles: geológico (regiones fisico-geologicas), geográfico (regiones geomorfologicas), genético (dominios del relieve) y dinámico- configuracional (elementos del relieve). La clasificación se aplica a un sector del sistema central español, simulando su aportación a procesos de planificación territorial a distintos ámbitos politico-administrativos y normativos; se completa además con ejemplos concretos: restauración de paisaje y caracterización-cuantificación de "el hombre como agente geomorfológico"

Cultures and generations. Attitudes and values to education, labor and consumption in three generations of young spanish

El presente artículo tiene por finalidad describir y analizar las actitudes y los valores hacia la educación, el trabajo y el consumo, así como las representaciones del tiempo, de tres generaciones de jóvenes españoles durante las etapas del capitalismo de producción y el de consumo. Durante este periodo los jóvenes de estas generaciones cambiaron su orientación hacia estos ámbitos, cambiando también sus identidades. En la primera parte del artículo se mostrará el contexto social general en el que se producen dichos cambios, mientras que la segunda parte estará dedicada enteramente a la descripción y al análisis de las generaciones que son el objeto principal de este estudio.This article aims to describe and analyze the attitudes and values towards education,work and consumption, as well as representations of time, three generations of youngSpaniards during the stages of capitalist production and consumption. During thisperiod the young people of these generations change their orientation to these areas,also changing their identities. In the first part of the article will be shown the generalsocial context in which these changes will be displayed. While the second part will bedevoted entirely to the description and analysis of the generations that are the mainobject of this study.info:eu-repo/semantics/publishedVersio

Comunidades de práctica en las PYMES del sector turístico del Departamento de Caldas

Within the framework of knowledge management, it is necessary to develop intellectual capital, for which variables such as communities of practice must be considered, given their importance for the development of organizations. The research results presented in this article are intended to establish the state of development of communities of practice related to intellectual capital in SMEs in the tourism sector of the Department of Caldas, Colombia, for which it was used a descriptive and correlational analysis with an evaluation model adapted to specific communities, it was possible to evaluate 87% of the SMEs. The main findings show the consolidation of communities of practice of SMEs operators in the tourism sector in the department of Caldas, and highlight the leadership and teamwork of these.En el marco de la gestión del conocimiento, se hace necesario desarrollar el capital intelectual, para lo cual se deben considerar variables como las comunidades de práctica, dada su importancia para el desarrollo de las organizaciones. Los resultados de la investigación presentados en este artículo pretenden establecer el estado de desarrollo de las comunidades de práctica relacionadas con el capital intelectual en las PYMES del sector turístico del Departamento de Caldas, Colombia, para lo cual se utilizó un análisis descriptivo y correlacional con un modelo de evaluación adaptado a comunidades específicas, siendo posible evaluar al 87% de las PYMES. Los principales hallazgos muestran la consolidación de las comunidades de práctica de los operadores de PYMES del sector turístico en el departamento de Caldas, y destacan el liderazgo y el trabajo en equipo de estos

Comunidades de práctica en las PYMES del sector turístico del Departamento de Caldas

Within the framework of knowledge management, it is necessary to develop intellectual capital, for which variables such as communities of practice must be considered, given their importance for the development of organizations. The research results presented in this article are intended to establish the state of development of communities of practice related to intellectual capital in SMEs in the tourism sector of the Department of Caldas, Colombia, for which it was used a descriptive and correlational analysis with an evaluation model adapted to specific communities, it was possible to evaluate 87% of the SMEs. The main findings show the consolidation of communities of practice of SMEs operators in the tourism sector in the department of Caldas, and highlight the leadership and teamwork of these.En el marco de la gestión del conocimiento, se hace necesario desarrollar el capital intelectual, para lo cual se deben considerar variables como las comunidades de práctica, dada su importancia para el desarrollo de las organizaciones. Los resultados de la investigación presentados en este artículo pretenden establecer el estado de desarrollo de las comunidades de práctica relacionadas con el capital intelectual en las PYMES del sector turístico del Departamento de Caldas, Colombia, para lo cual se utilizó un análisis descriptivo y correlacional con un modelo de evaluación adaptado a comunidades específicas, siendo posible evaluar al 87% de las PYMES. Los principales hallazgos muestran la consolidación de las comunidades de práctica de los operadores de PYMES del sector turístico en el departamento de Caldas, y destacan el liderazgo y el trabajo en equipo de estos

Discovery and redescription of the true Nuvol umbrosus Navás and naming of a new Nuvol species (Neuroptera, Chrysopidae, Leucochrysini)

Examination of a newly discovered specimen of Nuvol showed that our earlier species determination of Nuvol umbrosus Navás had been incorrect and that our “redescription” of the species actually applied to an undescribed species. Here, we redescribe the true N. umbrosus, based on a newly discovered male specimen. This specimen closely resembles Navás’ description, and it was collected from the Atlantic Forest as was the original type specimen. In addition, we assign the previously misidentified Nuvol specimens from the Amazonian region to a separate species, Nuvol satur Sosa & Tauber, sp. nov. As a result of these actions, the genus Nuvol now contains two morphologically and geographically distinct species. In addition, the abdomens and genitalia of both sexes of Nuvol are now described (although each from a separate species)

Prácticas, valores y actitudes de los jóvenes: un estudio de caso de los estudiantes de la Universidad de Minho

Analysing the behaviours, values and attitudes of youth allows us to make a merciless examination of our time, helping to understand the tangled roots of our collective experience, so that, when analysing their options, we are not only studying the present time, but also to envision the future of our society. Having said that, the present study aims to analyse the practices, values and attitudes of young people in order to better understand their current evaluative and religious tendencies. Through a quantitative methodology, students at the University of Minho were surveyed, aged between 18 and 35 years. From the conclusions it appears that young people look for more individualistic and less social occupations, allowing them moments of personal satisfaction. Regarding their religious and evaluative dimension, it was found that little or no participation in religious services and that they show high levels of justification for certain behaviours, appearing to react openly to practices that are normally disapproved of by society. Environmental Protection, Racism and Xenophobia and Gender Violence are the current topics that deserve greater concern on the part of young university students.Analisar os comportamentos, valores e atitudes da juventude permite que se faça um exame impiedoso sobre o nosso tempo, ajudando a perceber as enredadas raízes da nossa vivência coletiva, pelo que, ao analisar as suas opções, estamos não só a estudar o tempo presente, mas também a vislumbrar o futuro da nossa sociedade. Exposto isto, o presente estudo visa analisar as práticas, valores e atitudes dos jovens de forma a melhor compreender as suas atuais tendências valorativas e religiosas. Através de uma metodologia quantitativa, inqueriu-se estudantes na Universidade do Minho, com idades compreendidas entre os 18 e os 35 anos. Das conclusões depreende-se que os jovens procuram atividades de ocupação mais individualistas e menos sociais, possibilitando-lhes momentos de satisfação pessoal. Quanto à sua dimensão religiosa e valorativa, verificou-se que pouco ou nada participam nos serviços religiosos e que manifestam níveis elevados de justificação para determinados comportamentos, aparentando reagir abertamente a práticas que, normalmente, são desaprovadas pela sociedade. A Proteção do ambiente, o Racismo e a xenofobia e a Violência de género constituem os temas da atualidade que merecem maior preocupação por parte dos jovens universitários.El análisis de los comportamientos, valores y actitudes de los jóvenes nos permite hacer un examen implacable de nuestro tiempo, ayudándonos a comprender las raíces enmarañadas de nuestra experiencia colectiva, de modo que al analizar sus elecciones no sólo estamos estudiando el tiempo presente, sino que también vislumbramos el futuro de nuestra sociedad. Por ello, el presente estudio pretende analizar las prácticas, los valores y las actitudes de los jóvenes para comprender mejor sus tendencias valorativas y religiosas actuales. A través de una metodología cuantitativa, se encuestó a estudiantes de la Universidad de Minho, de entre 18 y 35 años. De las conclusiones se desprende que los jóvenes buscan actividades ocupacionales más individualistas y menos sociales, que les posibilitan momentos de satisfacción personal. En cuanto a su dimensión religiosa y de valores, se constató que participan poco o nada en los servicios religiosos, y que manifiestan altos niveles de justificación de ciertos comportamientos, pareciendo reaccionar abiertamente ante prácticas que normalmente son desaprobadas por la sociedad. La protección del Medio Ambiente, el Racismo, la xenofobia y la Violencia de Género son los temas de actualidad que merecen una mayor preocupación por parte de los jóvenes universitarios

Combustion of Soya Oil and Diesel Oil Mixtures for Use in Thermal Energy Production

Producción CientíficaIn August 2005, Spain approved the Plan for Renewable Energy Sources for the period 2005-2010 (P.E.R.), including co-combustion installations. Co-combustion in the P.E.R. aims to increase power output by 12,185.3 GWh in five years and shows great interest in studies of the combustion of mixtures of fossil and bio-combustible fuels. This paper presents studies of the co-combustion of soya oil and diesel for thermal heating. The paper begins with a characterization of soya oil as well as mixtures of this oil, with diesel, as fuels. The combustion of the soya oil mixtures and diesel is made in an installation, where the pressure of injection as well as the air volume of the burner can be changed. The obtained results inside to be the environmental average legislation and a greater efficiency of combustion is found. The conclusions show that the use of mixtures of soya oil and Diesel for producing thermal energy in conventional equipment is feasible

Erosión minera en la cuenca del arroyo Peñalén (Parque Natural del Alto Tajo, Guadalajara)

Depto. de Geodinámica, Estratigrafía y PaleontologíaFac. de Ciencias GeológicasTRUEpu

Geological factors of the Guadalajara landscapes (Central Spain) and their relevance to landscape studies

The landscapes of a territory are the consequence of its history; overlapped geological, vegetable and cultural histories usually exist on a landscape. At the Mediterranean domain, however, a translucent vegetation exists, and its history is closely related to the geologic and cultural histories, because low-technology agricultural uses on a different hardness rock background control vegetation. Thus, in areas like the Guadalajara province, the geologic composition and the human activities can be considered the primary conditions for landscape configuration. Both condition the typologies, distribution and relative importance of the geotic, biotic and anthropogenic components of landscapes. A complex network of interrelations among all them exists but, in the base of which lie the geology of the territory, included relief, because it has amore independent influence since man cannot modify the geologic factors; such as the colour of the rocks, the size and distribution of rock bodies, the palaeogeographic domains and the tectonic structure all which control landscape development and configuration. Moreover, geology influences conditions and even limit, the presence, typologies and development of the biotic and anthropogenic elements. These factors also have a major relevance for environmental management, educational and economic policy, and, in some cases, for environmental impact assessment.Depto. de Geodinámica, Estratigrafía y PaleontologíaFac. de Ciencias GeológicasTRUEpu